From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: paulmck@kernel.org, Bradley Morgan <brads@mainlining.org>
Cc: boqun@kernel.org, frederic@kernel.org, include@grrlz.net,
jiangshanlai@gmail.com, joelagnelf@nvidia.com,
josh@joshtriplett.org, linux-kernel@vger.kernel.org,
neeraj.upadhyay@kernel.org, qiang.zhang@linux.dev,
rcu@vger.kernel.org, rostedt@goodmis.org, urezki@gmail.com
Subject: Re: [PATCH] hazptrtorture: Fix inverted sleep condition in do_pending kthread
Date: Sun, 6 Sep 2026 09:09:53 -0400 [thread overview]
Message-ID: <28838ba4-8618-45d0-9994-3efee251bce2@efficios.com> (raw)
In-Reply-To: <b1abee12-5a3a-4750-be37-a3157c7e2217@paulmck-laptop>
On 2026-09-05 16:40, Paul E. McKenney wrote:
> On Fri, Sep 04, 2026 at 06:28:45PM +0100, Bradley Morgan wrote:
[...]
> I would not say "no" to a fix for this issue:
>
> https://lore.kernel.org/all/EE579805-42F2-4C58-B752-F28779EEB717@grrlz.net/
I'm not sure this URL actually points to a relevant issue ?
>
> Once that is in place, I would be happy to put this back into -next.
>
> At some point, we will need to get rid of the concept of wildcard hazard
> pointers, as those end up instead emulating RCU, but I don't see that
> as an immediate obstacle.
I already have the implementation which eliminates the wildcard if we
care about this. It was part of a previous hazptr series version.
Do you want me to resurrect it on top of the current series ?
This depends on:
- ptr_eq(),
- then use ptr_eq() to compare the loaded pointer (pre mb)
with the re-loaded pointer (post-mb).
See: https://lore.kernel.org/all/20251218014531.3793471-1-mathieu.desnoyers@efficios.com/
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com
next prev parent reply other threads:[~2026-09-06 13:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-04 0:03 [PATCH] hazptrtorture: Fix inverted sleep condition in do_pending kthread Bradley Morgan
2026-08-04 3:46 ` Paul E. McKenney
2026-09-04 13:01 ` Mathieu Desnoyers
2026-09-04 16:00 ` Paul E. McKenney
2026-09-04 17:28 ` Bradley Morgan
2026-09-05 20:40 ` Paul E. McKenney
2026-09-05 21:08 ` Bradley Morgan
2026-09-05 22:54 ` Paul E. McKenney
2026-09-06 10:44 ` Bradley Morgan
2026-09-06 13:09 ` Mathieu Desnoyers [this message]
2026-09-06 13:20 ` Bradley Morgan
2026-09-06 13:21 ` Bradley Morgan
2026-09-06 18:46 ` Paul E. McKenney
2026-09-06 18:56 ` Bradley Morgan
2026-09-06 23:16 ` Paul E. McKenney
2026-09-07 18:11 ` Bradley Morgan
2026-09-07 20:18 ` Paul E. McKenney
2026-09-07 20:41 ` Bradley Morgan
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